Objective c UIPicker[\u NSCFConstantString\u isResizable]上出错：？

UI选择器让我再次陷入困境，我仍在学习UI选择器，因此不确定我是否在这里做了一些根本错误的事情

正在尝试显示行选取器中的图像

错误：

***由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：'-[\uu NSCFConstantString\u isressizable]：未识别的选择器已发送到实例0x70fc'
***第一次抛出调用堆栈：

代码如下：

#import "Imagepick.h"

@interface Imagepick ()

@end

@implementation Imagepick
 @synthesize select;
@synthesize imageview;


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
    // Custom initialization
}
return self;
}

- (void)viewDidLoad
{


   ////arrays & objects
   arrStatus = [[NSArray alloc] initWithObjects:@"pic1",@"pic2",nil];




}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
//One column
return 1;
}

-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:   (NSInteger)component
 {

return arrStatus.count;


 }

-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row    forComponent:(NSInteger)component
 {

  return [arrStatus objectAtIndex:row];

 }
 - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

{

 [imageview setImage:[arrStatus objectAtIndex:row]]; UIImage *pic1 = [[UIImage alloc]  initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"appstorelogo" ofType:@"png"]];

  [imageview setImage:[arrStatus objectAtIndex:row]]; UIImage *pic2 = [[UIImage alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"applogo" ofType:@"png"]];

 }



 - (void)viewDidUnload
{
[self setImageview:nil];
[self select:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

@end

---

*

pic1

和

pic2

未使用的变量警告，如果相关？

您的问题是[imageview setImage:[arrStatus objectAtIndex:row]；您正在尝试使用字符串设置图像

您也没有使用pic1和pic2

您可能需要将imagenames设置为数组，如下所示：

arrStatus = [[NSArray alloc] initWithObjects:@"appstorelogo",@"applogo",nil];

然后将图像设置为

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    UIImage *img = [[UIImage alloc]  initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[arrStatus objectAtIndex:row] ofType:@"png"]];

    [imageview setImage:img]; 
}

---

您的问题是[imageview setImage:[arrStatus objectAtIndex:row]]；您正在尝试使用字符串设置图像

您也没有使用pic1和pic2

您可能需要将imagenames设置为数组，如下所示：

arrStatus = [[NSArray alloc] initWithObjects:@"appstorelogo",@"applogo",nil];

然后将图像设置为

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    UIImage *img = [[UIImage alloc]  initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[arrStatus objectAtIndex:row] ofType:@"png"]];

    [imageview setImage:img]; 
}

---

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